I would like to know if this small plant its ready to harvest.

It does not seem ready to me I would wait until all the pistils are brown and begin to fall and leaving it like this usually the grass that comes out does not make you immediately but rises slowly and then bends your knees if you cut now you cut like they cut to the Dutch who cut into brown pistils and that's it but the plant is not really ripe and usually by cutting so the blow rises immediately and you still want to smoke and it is a commercial cutting method said this for me it is still early waiting for that the pistils begin to fall